package com.aaa.predicate;

import org.springframework.cloud.gateway.handler.predicate.AbstractRoutePredicateFactory;
import org.springframework.cloud.gateway.handler.predicate.BetweenRoutePredicateFactory;
import org.springframework.http.server.reactive.ServerHttpRequest;
import org.springframework.stereotype.Component;
import org.springframework.util.StringUtils;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.server.ServerWebExchange;

import javax.validation.constraints.NotNull;
import java.time.ZonedDateTime;
import java.util.Arrays;
import java.util.List;
import java.util.function.Predicate;

/**
 * @program: qy156-shop-parent
 * @description:
 * @author: 闫克起2
 * @create: 2022-11-21 16:27
 **/
@Component
public class AgeRoutePredicateFactory extends AbstractRoutePredicateFactory<AgeRoutePredicateFactory.Config> {


    public AgeRoutePredicateFactory() {
        super(AgeRoutePredicateFactory.Config.class);
    }

    @Override
    public List<String> shortcutFieldOrder() {
        return Arrays.asList("minAge", "maxAge");
    }
    @Override
    public Predicate<ServerWebExchange> apply(Config config) {

        return (serverWebExchange)->{
            ServerHttpRequest request = serverWebExchange.getRequest();
            //获取传递的年龄
            String age = request.getHeaders().getFirst("age");
            if(StringUtils.hasText(age)){
                int a = Integer.parseInt(age);
                if(a>=config.getMinAge()&&a<=config.getMaxAge()){
                    return true;
                }
            }
            return false;
        };
    }

    @Validated
    public static class Config {
        @NotNull
        private int minAge;
        @NotNull
        private int maxAge;

        public int getMinAge() {
            return minAge;
        }

        public void setMinAge(int minAge) {
            this.minAge = minAge;
        }

        public int getMaxAge() {
            return maxAge;
        }

        public void setMaxAge(int maxAge) {
            this.maxAge = maxAge;
        }
    }
}
